A measure that would bar Iowa county officials from issuing marriage licenses to same-sex couples faces a bleak future as it sits in a House committee.

Top Republicans on Thursday said they have no plans to debate the issue, viewing it a nod to the party's social conservative wing. Top Democrats argue the measure is unconstitutional and violates a 2009 Iowa Supreme Court decision striking down a state law defining marriage as being between one man and one woman.

Backers say introducing the measure is one more opportunity to voice their displeasure with how the marriage issue has been handled.

Republican Rep. Betty De Boef (dee-BUFF') says the issue has been handled badly and that some lawmakers want to take every opportunity to make that point.